Abstract: A device for positioning tentering frames into association with a workpiece which is being assembled along a transfer line which has a working station includes a movable guiding section which extends substantially perpendicular to the transfer line at the working station on each side of the transfer line at the working station on each side of the transfer line. The movable guiding section includes a sliding platform which is movable therealong on each side of the transfer line and which has a portion facing the assembly line with means for engaging respective tentering frames. At least two guide members or guidings are arranged on each side of the transfer line and in spaced relationship to each other so that they extend substantially parallel to the transfer line. Each guiding carries at least three tentering frames which are movable therealong into association with the platforms.

Abstract: Workpieces of unequal configuration are to be treated within an assembly line. For this purpose, suitable clamping frames are provided to hold the workpieces. These are moved about a common axis which extends laterally above an assembly line direction. While the upper edge of each individual clamping frame is hinged to an element which is rotatable about the axis, the lower edge is guided in a fixed guideway toward a working position. A common guideway length of two fixed guideways is movable into the working position transversely to the assembly line direction.